The National Archives has asked the Department of Justice to investigate former President Donald Trump’s handling of White House records, according to a source familiar with the matter.

The source said the Archives is seeking a review of whether Trump violated the Presidential Records Act, which requires that all records created by presidents be turned over to the National Archives at the end of their administrations, and other possible violations, including the handling of classified information.

It is not clear if the Justice Department will launch a formal investigation, as a vast majority of referrals to the department do not end up sparking a formal investigation. The Justice Department declined to comment.

In a statement Wednesday, the Archives said, “We do not comment on potential or ongoing investigations.” The request came after recent revelations that the National Archives had to retrieve 15 boxes of records that had ended up with Trump in Mar-a-Lago and that other documents given to the Archives were torn up and had to be pieced back together.

It might be a cyberattack targeting Ukraine’s energy grid. Or the movement of Russian battalions and tanks along the border and into firing range. Or perhaps even a long-range missile attack.

They’re all potential signs US and European officials are closely monitoring that could reveal President Vladimir Putin is moving forward with an invasion of Ukraine. With more than 100,000 Russian troops amassed along the Ukrainian border — a number that continues to grow — military and intelligence officials are scrutinizing the latest tactical maneuvers to try to anticipate when Moscow might shift from threatening an invasion to launching one.

US officials say they’re closely monitoring cyber intrusions, like the attack that hit Ukraine’s government last month. They’re watching not just Russian troops that amass on the border but where they’re positioned, and they’re keeping an eye on what Russia is doing with its equipment like tanks that would be central to any ground invasion.

At the same time, current and former officials tell CNN that ultimately there may not be a clear tip-off for an attack on Ukraine. Like the rumbling of an earthquake, there may be little or no advance warning of an invasion before it’s already underway, officials say.

Inflation soared over the past year at its highest rate in four decades, hammering American consumers, wiping out pay raises and reinforcing the Federal Reserve’s decision to begin raising borrowing rates across the economy.

The Labor Department said Thursday that consumer prices jumped 7.5% last month compared with a year earlier, the steepest year-over-year increase since February 1982.

When measured from December to January, inflation was 0.6%, the same as the previous month and more than economists had expected. Prices rose 0.7% from October to November and 0.9% from September to October.

Shortages of supplies and workers, heavy doses of federal aid, ultra-low interest rates and robust consumer spending combined to send inflation leaping in the past year. And there are few signs that it will slow significantly anytime soon.

British Prime Minister Boris Johnson said Thursday the Ukraine crisis has grown into “the most dangerous moment” for Europe in decades, while his top diplomat held icy talks with her Moscow counterpart who said the Kremlin won’t accept lectures from the West.

Amid the deadlock, Russian forces held sweeping maneuvers north of Ukraine in Belarus, part of a buildup of over 100,000 troops that has stoked Western fears of an invasion.

NATO also has stepped up military deployments to bolster its eastern flank, with the U.S. sending troops to Poland and Romania. A British Royal Air Force jet carrying 350 troops landed Thursday in Poland in a move that followed London sending anti-tank missiles to Ukraine to help boost its defenses.

“This is probably the most dangerous moment, I would say in the course of the next few days, in what is the biggest security crisis that Europe has faced for decades, and we’ve got to get it right,” Johnson said at NATO headquarters in Brussels.

Election officials in Texas are struggling to implement new provisions in the state’s voting laws ahead of the March 1 primaries — a warning sign for states that participated in the GOP push to rewrite voting rules after former President Donald Trump’s defeat.

Hang-ups include putting new ID requirements in place and navigating stricter rules about how to distribute voter registration and absentee ballot forms. The issues have frustrated and confused the people in charge of managing the vote in Texas, election officials from four counties said in interviews.

Among the consequences: An unusually high number of applications to vote by mail were rejected ahead of the primary, officials said.

The pileup of issues stem from the nationally watched fight over a new voting law last summer, which Democrats sought to block by twice breaking quorum and even absconding to Washington, D.C., for a time. The legislation eventually passed and was signed by Republican Gov. Greg Abbott after several Democratic lawmakers returned to Austin, but the breaks delayed the bill’s enactment by several months.